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SERVICE MANUAL
PMX-1400
Stereo Preamp Mixer
CONTENT'S:
Connections & Operations:............................................................Page 2-5
Specifications:.....................................................................................Page 5
Parts Lists:........................................................................................Page 5-6
PCBs:................................................................................................Page 7-9
Schematics...................................................................................Page 10-11
Gemini Sound Products Corp.
120 Clover Place P.O. Box 6928
Edison, NJ 08818-6928
732-738-9003 (Phone) • 732-738-9006 (Fax)
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Summary of Contents for Gemini PMX-1400
- Page 1 SERVICE MANUAL PMX-1400 Stereo Preamp Mixer CONTENT’S: Connections & Operations:............Page 2-5 Specifications:..................Page 5 Parts Lists:..................Page 5-6 PCBs:....................Page 7-9 Schematics...................Page 10-11 Gemini Sound Products Corp. 120 Clover Place P.O. Box 6928 Edison, NJ 08818-6928 732-738-9003 (Phone) • 732-738-9006 (Fax) ( 1 )
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Page 4: Features
7. ASSIGN (17) switch has five settings (OFF, 1, 2, 3 and 4) and 3. The PMX-1400 is supplied with four sets of output jacks: The MAIN allows you to direct Channel 1, 2, 3 or 4 through the LEFT side OUTPUT (34) jacks connect to the main amplifier. -
Page 5: Specifications
SPECIFICATIONS: The following instructions are provided for those who purchase a crossfader replacement unit from an authorized INPUTS: Gemini dealer: Phono..................3 mV, 47 KOhm Line..................150 mV, 27 KOhm MIC 1 & MIC 2...............1.5 mV, 2 K Ohm Balanced Bass....................± 12dB High......................±... - Page 6 Parts Lists - PCB1 Input/Output Description Part # Item # Designators IC1-4 INTEGRATED CIRCUIT NJM2068LD 074-145 INTEGRATED CIRCUIT NJM7812FA 074-107 INTEGRATED CIRCUIT NJM7912FA 074-114 Transistors Item # Designators Description Part # Q2-5 TRANSISTOR 2SC2878 076-095 TRANSISTOR 2SA1048 (2SA1317) 076-104 Electrical Parts Designators Description Part #...
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Page 7: Pcbs
PCB1 - Input/Output Page 7... - Page 8 PCB2 - Main Page 8...
- Page 9 PCB3 - Phono Page 9...
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Page 10: Schematics
Schematic A VR14 10KB R134 R136 R135 R129 30K 1% MIC-2 R141 C101 47/16 R111 IC8A C100 IC8B C145 MIC-2 1K 1% 10/16 SW8A IC1A 10KA 10/16 R140 R109 22/16 2068LD 2068LD 2068LD 22/16 1K 1% 10/16 C114 C115 47/16 47/16 30K 1% 47/16... - Page 11 Schematic B R215 R181 C176 R207 C194 68 47 R182 R221 10 R222 R219 IC17A C161 R192 R201 R200 VR24A IC19A 2068LD 10/16 C165 4558 C153 C154 10/16 R187 22/16 22/16 SW16A 50KA 100K C155 C156 SW02 22/16 22/16 R202 IC17B C164 R193...